DV 20 E AFM Airplane Description
Doc. No. 4.01.15-E Rev. 2 22-Mar-2022 Page 7 - 25
Ground Operation
CAUTION
Operation on the ground at high RPM should be avoided as
far as possible, as the blades could suffer stone damage. For
this reason a suitable site for engine runs should be selected,
where there are no loose stones or similar items.
7.8.3 OPERATING CONTROLS
Throttle Lever'
Manifold pressure is controlled by the throttle lever. The throttle lever is located on the'
large center console. ‘Forward' and ‘rear' are defined in relation to the direction of flight.'
This throttle lever is used to set the desired manifold pressure.'
Lever forward (MAX) = wide open throttle'
Lever to rear (IDLE) = Idle'
The separate ECU controls injected fuel quantity and ignition according to the desired'
engine throttle valve position selected with the throttle lever.'
Propeller Speed Lever'
Central lever with blue handle.'
Lever forward (HIGH RPM) = High RPM, fine pitch'
Lever to rear (LOW RPM) = Low RPM, coarse pitch'
By means of this lever, the propeller governor controls the propeller pitch and thus engine'
RPM (= propeller RPM). A selected RPM is held constant by the governor independent'
of the airspeed and the throttle setting (‘Constant Speed').'